Help turbo loud whine.. Lost of some power

[Gun40t]

Also have a question keith I seem to have a high pitched squeal coming on boost at around 4000rpm, sounds boost related ive had to cable tie my bottom intercooler hose because its been a *beep* and dropped below my bar can something like that affect boost noise if its pinched in about 8cm. Cheers brother.

[k31th]

that'll just be your regular boost leak, most likely.

[Gun40t]

  On 15/04/2019 at 11:32 PM, k31th said:

that'll just be your regular boost leak, most likely.

Probably be a good idea to smoke test it hey?

[k31th]

indeed

[Gun40t]

So tonight I brought the factory blow off valve to replace the stupid blocked off sh*t the previous owner had done I was hoping u could shed some light on where to find the vacuum line that goes into the top of the bov.

[k31th]

blocked off BOV, FTW!

but since you don't like it, the vacuum hose will come off a t-piece at the back of the plenum.

[Gun40t]

Blocked off bov sounds like its guna stall and u lose boost with the turbo..

[k31th]

it's hardly any lost boost if you're up it... it's manual vs auto that loses more boost (manual does) on gear changes... the idea of a BOV is to throw away all unused boost when you get stop accelerating, so I don't know what you want from it.

 

Not sure why you'd think a dose sounds like "guna stall" but it sounds like your car has a different problem if it does actually make the car come close to stalling.

 

but if you don't like the sound itself, that's fine.

[MBAF]

  On 17/04/2019 at 9:24 AM, k31th said:

loses more boost (manual does) on gear changes

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unless you flat shift ofcourse ;)

[k31th]

and have a hobbs switch to get rid of spark during hte change to allow for flat shifting and the associated gearset to be able to flat shift without doing much damage? yep.